1617-93-2Relevant academic research and scientific papers
Synthesis of N-pyrimidin[1,3,4]oxadiazoles and N-pyrimidin[1,3,4]-thiadiazoles from 1,3,4-oxadiazol-2-amines and 1,3,4-thiadiazol-2-amines via Pd-catalyzed heteroarylamination
Yan, Longjia,Deng, Minggao,Chen, Anchao,Li, Yongliang,Zhang, Wanzheng,Du, Zhi-yun,Dong, Chang-zhi,Meunier, Bernard,Chen, Huixiong
supporting information, p. 1359 - 1362 (2019/04/25)
An efficient and practical procedure was developed to prepare various N-pyrimidin[1,3,4]oxadiazole and thiadiazole scaffolds using a Buchwald-type coupling. The products of this reaction are otherwise difficult to access and could be used as building bloc
Synthesis of 2-amino-5-substituted-1,3,4-oxadiazoles using 1,3-dibromo-5,5-dimethylhydantoin as oxidant
Rivera, Nelo R.,Balsells, Jaume,Hansen, Karl B.
, p. 4889 - 4891 (2007/10/03)
A scalable synthesis of 5-substituted-2-amino-1,3,4-oxadiazoles via oxidation of a thiosemicarbazide precursor is described. The thiosemicarbazide intermediates are easily accessed from the corresponding acid chlorides. Oxidative cyclization using 1,3-dibromo-5,5-dimethylhydantoin as the primary oxidant, in the presence of potassium iodide, gives a variety of oxadiazoles in good yields. This methodology utilizes a commercially inexpensive and easily handled oxidant.
